package com.zr.mapper;

import com.zr.pojo.User;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

public interface UserMapper {
    //根据用户名和密码查询用户对象
     @Select("select * from user where username = #{username} and password = #{password}")
     User select(@Param("username") String username,
                 @Param("password")  String password);
    //根据用户名查询用户对象
     @Select("select * from user where username = #{username}")
     User selectByUsername(String username);
    //添加用户
     @Insert("insert into user values(null,#{username},#{password})")
     void add(User user);

}
